Germination variation in Arabidopsis thaliana accessions under moderate osmotic and salt stresses.

ABSTRACT:

Background

Water and salt stresses are two important environmental factors that limit the germination of seeds in most ecological environments. Most studies conducted so far to address the genetic basis of the above phenomenon have used stress conditions that are much more extreme than those found in natural environments. Furthermore, although an excess of ions and water restrictions have similar osmotic effects on germination, the common and divergent signalling components mediating the effects of both factors remain unknown.

Methods

The germination of seeds was compared under solutions of NaCl (50 mm) and polyethylene glycol (PEG, -0·6 MPa), that establish mild stress conditions, in 28 Arabidopsis thaliana accessions. Because Bayreuth (Bay) and Shadara (Sha) accessions sho

SUBMITTER: Vallejo AJ 

PROVIDER: S-EPMC2958794 | biostudies-literature | 2010 Nov

REPOSITORIES: biostudies-literature